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<pre><span class="sourceLineNo">001</span>package org.teapot.db.orm;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>/**<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Torm.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * 因为是单实例，所以在这个类中不能存储线程的信息。<a name="line.5"></a>
<span class="sourceLineNo">006</span> * 为此，引入Context的话，显着有些累赘。<a name="line.6"></a>
<span class="sourceLineNo">007</span> * 做成抽象类，在pojo中的话，pojo就不单纯了。<a name="line.7"></a>
<span class="sourceLineNo">008</span> * @author DBJ<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> */<a name="line.10"></a>
<span class="sourceLineNo">011</span>public class Torm {<a name="line.11"></a>
<span class="sourceLineNo">012</span>  private static volatile Torm INSTANCE;<a name="line.12"></a>
<span class="sourceLineNo">013</span><a name="line.13"></a>
<span class="sourceLineNo">014</span>  private Torm() {<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>  }<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>  /**<a name="line.18"></a>
<span class="sourceLineNo">019</span>   * getInstance.<a name="line.19"></a>
<span class="sourceLineNo">020</span>   * @return Torm<a name="line.20"></a>
<span class="sourceLineNo">021</span>   */<a name="line.21"></a>
<span class="sourceLineNo">022</span>  public static Torm getInstance() {<a name="line.22"></a>
<span class="sourceLineNo">023</span>    if (Torm.INSTANCE == null) {<a name="line.23"></a>
<span class="sourceLineNo">024</span>      synchronized (Torm.class) {<a name="line.24"></a>
<span class="sourceLineNo">025</span>        if (Torm.INSTANCE == null) {<a name="line.25"></a>
<span class="sourceLineNo">026</span>          Torm.INSTANCE = new Torm();<a name="line.26"></a>
<span class="sourceLineNo">027</span>        }<a name="line.27"></a>
<span class="sourceLineNo">028</span>      }<a name="line.28"></a>
<span class="sourceLineNo">029</span>    }<a name="line.29"></a>
<span class="sourceLineNo">030</span>    return Torm.INSTANCE;<a name="line.30"></a>
<span class="sourceLineNo">031</span>  }<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>  /**<a name="line.33"></a>
<span class="sourceLineNo">034</span>   * select.<a name="line.34"></a>
<span class="sourceLineNo">035</span>   * @param args String[]<a name="line.35"></a>
<span class="sourceLineNo">036</span>   * @return Torm<a name="line.36"></a>
<span class="sourceLineNo">037</span>   */<a name="line.37"></a>
<span class="sourceLineNo">038</span>  public static Torm select(String... args) {<a name="line.38"></a>
<span class="sourceLineNo">039</span>    System.out.println("SELECT");<a name="line.39"></a>
<span class="sourceLineNo">040</span>    for (int i = 0, size = args.length; i &lt; size; i ++) {<a name="line.40"></a>
<span class="sourceLineNo">041</span>      String arg = args[i];<a name="line.41"></a>
<span class="sourceLineNo">042</span>      System.out.println("arg=" + arg);<a name="line.42"></a>
<span class="sourceLineNo">043</span>    }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>    return Torm.getInstance();<a name="line.45"></a>
<span class="sourceLineNo">046</span>  }<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>  public Torm from() {<a name="line.48"></a>
<span class="sourceLineNo">049</span>    System.out.println(" FROM ");<a name="line.49"></a>
<span class="sourceLineNo">050</span>    return Torm.getInstance();<a name="line.50"></a>
<span class="sourceLineNo">051</span>  }<a name="line.51"></a>
<span class="sourceLineNo">052</span>}<a name="line.52"></a>




























































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